Earth working – Automatic power control – Obstruction sensing type
Patent
1990-05-03
1991-07-16
Taylor, Dennis L.
Earth working
Automatic power control
Obstruction sensing type
172191, 180131, A01B 6906
Patent
active
050317040
ABSTRACT:
A guidance system for an agricultural implement pulled by a tractor is disclosed. The implement, such as a cultivator or planter, has ground-engaging discs mounted to a frame or toolbar and includes a control hitch mounted to the conventional three-point tractor hitch. The toolbar of the implement is mounted to the control hitch for rotation about a vertical axis. A first sensing device senses the position of the implement relative to a desired lateral position, such as the distance from a crop row, and generates a signal representative of the displacement of the implement from that desired lateral position. The sensing device actuates a hydraulic circuit to turn the implement toolbar toward the desired position; and the discs steer the implement toward the desired lateral position. A second sensing device senses the angular position of the implement relative to the control hitch. When the first sensing device determines that the implement is in the desired lateral position, the second sensing device actuates the hydraulic circuit to rotate the implement toolbar to its normal use position transverse to the direction of travel.
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patent: 3795285 (1974-03-01), Scholl et al.
patent: 4184551 (1980-01-01), Orthman
patent: 4228860 (1980-10-01), Orthman
patent: 4463811 (1984-08-01), Winter
patent: 4607716 (1986-08-01), Beck
patent: 4640365 (1987-02-01), Schmidt
"The Guide", Brochure by Lincoln Creek Mftg, Owner's Guide and Parts List.
Fleischer Mftg. Inc., "Buffalo All-Flex Cultivator", Sales Brochure.
David John C.
Fleischer Mathew W.
Fleischer Manufacturing, Inc.
Taylor Dennis L.
Thompson Jeffrey L.
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